Anchor



Patented st. 19, 1926.

tSaa,

WALTER o. answe er Sta Jose, cremains.

ANCHOR.

Application filed November This invention relatesparticularly ,to an anchor for use in securing a 'plate, or any other desired article to a marble "slab or block, or for merely providing asuitable point or" attachment for a lifting cable.

It is one object of the invention to provide an anchor of the character, indicated that will have a positive seat'in themarblje or stone without utilizing any expansion 1.0 mechanism such as islordinarily used.

It is another object of the invention to provide an anchor of the character indicated that is exceedingly economical to manufacture, and one that may be seated in the stone or marble with a minimum amount of labor.

In the drawing Figure 1 is a plan view of a device embodying my invention in position in a marble slab.

Figure 2 is a sectional view through the slab showing the device in elevation.

Figure 3 is a sectional-view through a slab showing another embodiment of my invention. I

Figure 4 is a sectional view through a slab showing still another embodiment of my invention.

Figure 5 is a plan view of a portion of a 50 slab showing the method of forming the anchor seat.

Referring more particularly. to the drawing, I show at 1 a portion of a slab of marble or stone or any other similar material. In preparing this slab for the anchor two round holes are drilled therein at right angles to the plane of the surface of the slab and at diverging angles from a center line 2 as indicated at 3-3, and the partition 4 dividing the holes is then broken away. In the forms oi the invention shown in Figures 1, 2 and 3 the corners 5 are also broken away to permit the insertion of the larger element of the anchor, in the resultingcavity or recess 6.

At 7 I show a solid pyramidal element, rectangular in cross-section at right angles to its longer axis, its greatest cross-sectional area being slightly less than that of the mouth of the recess 6 as clearly shown in Figure 1. The smaller upper end of this element is tapped at 8 to receive a bolt as 9.

At 1010 are a pair of semi-cylindrical elements, the diameter of each element being substantially the same as the thickness of the element 7 and its curved surface be- 30, ea. serial Nb. am

mg such as to snugly fit one of the end walls of the'recess 6. u

. In using this form of my inventionthe, element 7 is first dropped into the recess 6 large end down, and then the two semicylindrical'elements 10- '10 are dropped in, one on each end ot'elenient 7. If a plate such as 11 is to be's'e cured to thejslabit is. now placedQin position and the bolt9 insertedtherethroiigh and into engagement with the tapped element 7. By tightening up the bolt the element 7 is drawn upwardly into positive contact with the elements 1010. By this construction and arrangement of parts the engagement of the anchor with the slab is positive. There is no opportunity for any of the parts to slip as is the case when an ordinary expansion bolt is used.

In the embodiment shown in Figure 3 I show a short element 12 having the same general shape as the element 7 described but shorter and so formed that it may be a casting or it may be stamped out of sheet metal. With this element 12 are used the two semi-cylindrical parts 1313 and a plate or washer 1.6 set upon their upper ends. A bolt 14 passes through the part 15 to be mounted on the slab and through the washer 16 and is screwed into the part 12. lVhen the bolt is tightened up it draws the part 12 upwardly into solid contact with the parts 13-13 and firmly binds the part 15 in position.

In the embodiment shown in Figure 1, I show an element 17 similar in form to element 12 hereinbefore described but having two of its diametrically opposite corners rounded off as shown at 18 and 19. By rounding these corners off in this manner a much smaller recess 6 may be provided, because the part may he dropped into the recess endwise and then turned through the position indicated in dotted lines at 20 to the position 21, whereupon the bolt 22 may be threaded into it. The upward or outward pull on the bolt 22 will of course draw the element 17 into solid contact with the end walls of the recess. In this form no semicylindrical parts such as 1313 are required because the length of the element 17 is greater than the length of the mouth of the recess 6 and therefore cannot be pulled therethrough without being turned endwise. This embodiment permits the use of a much smaller recess and a single cast or stamped element 17 in addition to a bolt for engagement therewith. It may also be readily seen that this form of anchor may be easily aligned with any fixed opening within a limited radius by the use of shims at either end.

An anchor constructed after the manner disclosed is not only positive in its engagement with the slab or block in which it is placed, but it becomes a permanent part thereof. It cannot become loose in the lapse of time, and therefore combines permanency with economy of manufacture, and ease of installation. 7

In the following claim the term base part is used to designate any element of stone, marble or other material provided with a socket for the reception of the anchor.

It is to be understood, of course, that while I have herein shown and described the presocket adapted to engage each side wall. a

wedge shaped element engageable with the opposing surfaces of the lower ends of said keys, a washer mounted upon the upper ends of said keys, a supported element mounted upon said base and washer, and a bolt pass-- ing through said supported element and washer and engaging said wedge sha j ed element.

WALTER C. GHETTI 

